Catch-basin.



G. A. ROBERTSON.

CATCH BASIN.

(Application filed Sept. 20, 189B.

Patented Ian. 30, i900.

,No Model.)

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'rrEn TATES GEORGE A. ROBERTSON, OF VVESTMOUNT, CANADA.

CATCH-BASIN.

SPECIFICATION forming' part ofy Letters Patent No. 642,530, datedJanuary 30, 1900. Application tiled September 20, 1898. Serial No.691,474. (No model.)

To all whom it may concern,.-

Be it known that I, GEORGE A. ROBERTSON, a subject of Her Majesty theQueen of Great Britain, residing at Vestmount, Province of Quebec,Canada, have 'invented certain new and useful Improvements inCatch-Basins, (for which Letters Patent of the Dominion of Canada weregranted September 6, 1898,No. 61,106, the application for which was ledAugust 26, 1898, Serial No. 82,826;) and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to improvements in street-receivers orcatch-basins, and has\par ticular reference to that type of catch-basinswhich are made of aplurality of sections; and my object, brieiy stated,is to provide catchbasins of this type which are particularly adaptedfor use in cold climates, where the sewer-pipes are at a suitable depth,so as to,

be below the frost-line and where the catchbasins must necessarily bequite deep.

All sectional catch-basins for sewers as heretofore constructed, so faras I am aware, have been formed so that movements of the earth aroundthem, due to the action of frost, has had a tendency to separate thesections and to loosen the connection with the sewerpipe. It has beenproposed in such catchbasins to provide interlocking lugs on suchsections; but this adds expense to the catchbasin, and, moreover, theinterlocking lugs are liable to become broken. There are severaladvantages in sectional catch basins which make them desirable. Amongthese advantages are: They are easier to construct in sections and areeasier transported when so made. If a breakage occurs in a section theentire catch-basin is not ruined. In locating such catch-basins thelower section can be placed at the `bottom of the excavation and theconnection with the sewer-pipe made while the workman stands inside ofsaid lower section, after which the upper sections can be placed inposition. The'earth around the lower part of the catch-basin vcan bestamped down in place better and more solidly when the catch-basin is asectional one than when in one whole piece, because it can be donebefore the upper sections are put in place, the workman standing insidethe lower section, and the excavation for a sectional catch-basin doesnot have to be as large as for an integral catch-basin of the same size,for the reason that, as above stated, the operation of making theconnection with the sewer-pipe may be performed while the workman standsinside and reaching over with his arms, while with an integralcatch-basin the excavation must be large enough to permit the workman tostand and work outside thereof in making such connection. Anotherimportant advantage in a sectional catch-basin is that when the gradingvof the street is changed the upper section may be removed and may bereplaced by another section of greater or less height, as 1 occasion mayrequire, whereas when an integral catch-basin is used it frequently hasto be entirelyremoved and replaced by another or has to be reset. Asabove stated, however, so far as I am aware,all sectional catch-basinsfor sewers have been so constructed that they were liable to be actedupon by the movements ot earth around them to the detriment of theconnections between the sections and with the sewerpipe.

The object of my invention lis to provide a sectional catch-basin forsewers that will be free from any external projections that might beacted upon by the earth and ,of such form that no lugs or interlockingparts are necessary to insure the correct and permanent relativepositions of the various sections. I attain these Objects byconstructing the catchbasin of a series of uniformly-tapered sections,each section being larger at the bottom than at the top, the lowersection having means for connecting it with a sewer-pipe and having aclosed bottom of greater diameter than any other portion of thecatch-basin, the upper sections being entirely free from externalprojections.

In the drawings, in which similar numerals of reference indicate similarparts in all of the views, Figure 1 is a view showing my invention asapplied. Fig. 2 is a central vertical sectional view of the same. Fig. 3is a top plan view of the trap. Fig. 4 is an elevation of the trap.

1 designates a catch-basin formed of a series of sections 2, the lowersection being pro- ICO vided with a bottom which may be formed integralwith the sides of the section or may be secured thereto to make aperfectly tight joint. The lower section is provided at one side with anopening 3, to which is applied the sewer-pipe connection t, and mountedinside of said opening 3 a trap 5 is removably secured in a suitablemanner, such as bysuitable inclined slideways 6, in which thetrap 5 isadapted to be placed and be heldin tight position by reason of itsweight, a removable top 7 serving to close the top of the trap in 'anobvious man ner. Each of the sections exclusive of the lower section isprovided at its lower end with inwardly-extending annular flanges 8,which are adapted to fit on the upper end of the next section below. Theupper section has a portion of its top closed,

as best shown in Fig. 2, and within the re.

duced opening formed and mounted on the top of the upper section is thestreet or top section 9, having its face provided with suitable openings10 for the passage of the drainings. If desired, the top of the section9 may be made removable, although such is not necessary.

By this construction it will be readily seen that I have provided animproved catchbasin which is extremely durable in its construction andwhich when the grade of the street is to be changed will allow of thevarying of the position of the basin without unnecessary trouble, thisbeing accomplished by means of the addition to the basin of anothersection or the substitution of sections of different sizes, it beingapparent that sections of various sizes may be made as may be foundnecessary and that one may be readily substituted for another.

It will now be understood that, due to the shape of the basin, anypressure of the earth against the sides will only tend to more firmlyhold the upper sections upon the lower one, which latter is in practicefirmly seated below the frost-line, and this is attained without the useof any locking means whatever between the sections, and owing to thefact that no interlocking devices are employed no particular care isnecessary when locating the upper sections, as each said section may besimply placed in position and left there Without rotating or using anycare or effort to make the parts fit, as is necessary where interlockinglugs are used. This freedom from interlocking lugs or projectionsenables the section below the section 9, however, to be so rotated, ifnecessary, on its seat as to bring the top of that section in properposition to receive said section 9, so that the face of said lattersection will be held in aline; ment with the curb or other predeterminedposition, as will be clear by referring to igs. 1 and 2.

Having thus described my invention,what I claim as new is- A catch-basincomprising a series of uniformly-tapered sections, each section beinglarger at the bottom than at the top, the lower section having asewerpipe connection and a closed bottom of greater diameter than anyother portion of the catch-basin, the upper sections being entirely freefrom external projections and each of the upper sections being freelyrotatable upon the section below it, each section except the lower onehaving an annular flange fitting within the upper edge of the section onwhich it rests, whereby the upper sections are solely and firmly held totheir seats by the pressure of the earth against their tapering sides,and whereby the shape and external configuration of the catchbasin as awhole will prevent any portion thereof from being lifted by movement ofthe earth against the sides of any portion thereof, the upper end of theupper section having a non-circular opening, and a street or inletsection fitted to said opening, whereby said street or inlet section canbe rotated only with the upper tapering section.

In witness whereof I have hereunto set my hand in the presence o f twowitnesses.

HORACE G. SErrz, F. A. CABANA.

